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Published online by Cambridge University Press: 17 January 2013
Since the year 1803, when Desrone discovered the substance which afterwards received the name of Narcotine, the chemical investigation of opium has engaged the attention of many skilful and distinguished chemists, and in their hands has proved the source of a series of substances, unprecedented in their number and the variety of their properties. Up to the present time, there have been detected in it no less than eleven different substances, one acid, and ten, either basic or indifferent, all presenting definite characters and crystalline form, besides various imperfectly characterised substances, described under the names of caoutchouc of opium, resin of opium, extractive, and the like.
page 347 note * Since this paper was written, two new substances have been added to the number of the constituents of opium; these are methylouarcotine and propylonarcotine, which have been recently described by Wertheim.
page 350 note * Annales de Chimie et de Physique, vol. 1., p. 262.
page 350 note † Ibid., vol. lix., p. 151.
page 353 note * Dr Traill has since informed me that a specimen in his collection gives a fine blue with hydrochloric acid; so that the product sold in Paris as narceine, would appear to be very variable in its properties.
page 355 note * Journal de Pharmacie, vol. xxi., p. 569.
page 355 note † Annales de Chimie et de Physique, vol. lix., p. 155.
page 355 note ‡ Annalen der Chemie, vol. xix., p. 9.
page 360 note * Annalen der Chimie und Pharmacie, vol. 1., p. 6.
page 365 note * Annalen der Chimie und Pharmacie, vol. 1., p. 29.